/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.flink.cdc.connectors.iceberg.sink.v2;

import org.apache.flink.core.io.SimpleVersionedSerializer;
import org.apache.flink.core.memory.DataInputDeserializer;
import org.apache.flink.core.memory.DataOutputViewStreamWrapper;
import org.apache.flink.util.InstantiationUtil;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

/** Serializer for {@link WriteResultWrapper}. */
class WriteResultWrapperSerializer implements SimpleVersionedSerializer<WriteResultWrapper> {
    private static final int VERSION = 1;

    @Override
    public int getVersion() {
        return VERSION;
    }

    @Override
    public byte[] serialize(WriteResultWrapper writeResultWrapper) throws IOException {
        ByteArrayOutputStream out = new ByteArrayOutputStream();
        DataOutputViewStreamWrapper view = new DataOutputViewStreamWrapper(out);
        byte[] result = InstantiationUtil.serializeObject(writeResultWrapper);
        view.write(result);
        return out.toByteArray();
    }

    @Override
    public WriteResultWrapper deserialize(int version, byte[] serialized) throws IOException {
        if (version == 1) {
            DataInputDeserializer view = new DataInputDeserializer(serialized);
            byte[] resultBuf = new byte[serialized.length];
            view.read(resultBuf);
            try {
                return InstantiationUtil.deserializeObject(
                        resultBuf, WriteResultWrapperSerializer.class.getClassLoader());
            } catch (ClassNotFoundException cnc) {
                throw new IOException("Could not deserialize the WriteResult object", cnc);
            }
        }
        throw new IOException("Unrecognized version or corrupt state: " + version);
    }
}
